Tyco NEKA Series, Installation Instructions Manual

Page: 5 / 20

NEKA 5
The Memory and Alarm flash sequences are as follows:
Under low battery conditions, the siren bypasses the flash and use the residual charge to power the loudspeaker (
NEKA
and
NEKA-F
only). This status is signalled on terminal
G
(
NEKA
and
NEKA-F
only). This terminal (open collector) is connected
to ground during standby status, but disconnects in the event of low battery (
NEKA
and
NEKA-F
only), or damage to the loud-
speaker or flash.
 No Trouble: the loudspeaker emits an acoustic signal and the flash blinks once.
 Battery trouble: the loudspeaker emits two acoustic signal and, if battery charge is sufficient, the flash blinks twice.

Flash trouble: the loudspeaker emits three acoustic signal.
 Loudspeaker trouble: the flash blinks four times.
The above listed signalling are displayed every 5 seconds until troubles are present or the jumper is removed. The siren runs the
power-up sequence when the jumper is removed.

If troubles are not present, the inhibition of siren activation is delayed between 30 seconds and 2 minutes, to prevent this
function being used to tamper the siren.

In this phase, anti-foam device can be tested as
FT
output activates as soon as the infrared barrier of the device is interrupted
(
NEKA-F
and
NEKA-FS
only).
Alarm priority
The siren priority is as follows:
Higher priority alarm always overrides lower priority alarm, generating a variation in the audible signal.

A
and
F
terminals have the same priority because the acoustic signalling activated by terminal
A
does not interfere with the
optical signalling activated by terminal
F
.
The alarm time is counted from activation of the loudspeaker and strobe/flash.
NEKA/NEKA-F
ON (ms) OFF (ms) Description
Alarm flashing 250 750 Standard Blink
Memory flashing 250 1500 Slow Blink
NEKA-FS
Frequency (Hz) Description
Alarm flashing 1 Standard Blink
Memory flashing 0.6 Slow Blink
When
S
and
T
’s pins are connected as shown at the side, siren activation is inhibit and the siren displays the trou-
bles as following.
Alarm Priority
Internal tamper 1
+N
2
AF
3
A
4
F
4